| ID | Name | Type |
|---|---|---|
| #1225 | Arc Developments | Z |
| #1226 | Arcade Age | Z |
| #17046 | Arcade Computers | A |
| #17047 | Arcade International Software | S |
| #1227 | Arcade Software | P |
| #17048 | Arcade Systems | M |
| #1228 | Arcadia | ? |
| #1229 | Arcadia S.r.l. | Z |
| #1230 | Arcadia Soft | Z |
| #16005 | Arcadia Software | P |
| #1231 | Arcadia Systems Inc | Z |
| #1232 | Arcana Software Design | Z |
| #1233 | Arcanum Software Developments | Z |
| #17974 | Archer Maclean | + |
| #22881 | Arcus Software | P |
| #18152 | Arda | + |
| #16549 | Arda Erdikmen | + |
| #1234 | Ardo | ? |
| #1236 | Arena Software | Z |
| #1237 | Arend Rensink | ? |